Boxer’s fracture is: MP 11
**Core Concept**
A Boxer's fracture is a type of fracture that occurs at the neck of the fifth metacarpal bone in the hand, typically resulting from a punch or a fall onto an outstretched hand. This fracture is commonly seen in boxers and other individuals involved in contact sports.
**Why the Correct Answer is Right**
The fracture occurs due to a sudden, forceful bending of the metacarpal bone, which can lead to a transverse or oblique fracture at the neck. The mechanism of injury involves a combination of flexion, rotation, and axial loading forces that cause the bone to break. The fracture is often associated with swelling, pain, and limited mobility of the affected hand.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because a Boxer's fracture specifically involves the fifth metacarpal bone, whereas a scaphoid fracture involves the scaphoid bone in the wrist.
**Option B:** This option is incorrect because a Bennett's fracture involves the base of the first metacarpal bone, whereas a Boxer's fracture occurs at the neck of the fifth metacarpal bone.
**Option C:** This option is incorrect because a Colles' fracture involves the distal radius bone in the forearm, whereas a Boxer's fracture involves the metacarpal bone in the hand.
**Clinical Pearl / High-Yield Fact**
A Boxer's fracture can be associated with an open fracture if the skin is broken, which can increase the risk of infection and other complications. It is essential to seek medical attention promptly if symptoms persist or worsen over time.
**Correct Answer: D.**